WASP-106 b
WASP-106 b is a hot Jupiter orbiting WASP-106 in the constellation Leo. It lies about 1,149 light-years from Earth and was discovered in 2014 using the transit method.
How Big Is WASP-106 b?
WASP-106 b has a radius of 12.11 times that of Earth, or 1.08 times the radius of Jupiter. Its mass is 613 times that of Earth.
Is WASP-106 b in the Habitable Zone?
WASP-106 b orbits inside the inner edge of the habitable zone of WASP-106. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of WASP-106: 1.174–2.751 AU (conservative: 1.487–2.609 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Orbit and Year Length
A year on WASP-106 b — one full orbit around WASP-106 — lasts 9.29 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.090 AU — closer to its star than Mercury is to the Sun. Its orbit is nearly circular (eccentricity 0.023).
How Was WASP-106 b Discovered?
WASP-106 b was discovered in 2014 using the transit method, with observations from SuperWASP.
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is WASP-106 b?
WASP-106 b is 1,148.7 light-years (352.2 parsecs) from Earth. Light arriving here tonight left the planet about 1,149 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 20,217,120 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. WASP-106 b scores 0.08, ranking #4,658 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-106
WASP-106
- Surface temperature
- 6,002 K (Sun: 5,772 K)
- Mass
- 1.18 M☉
- Radius
- 1.47 R☉
Planetary System
WASP-106 b is the only planet known to orbit WASP-106 so far.
WASP-106 b — Complete Data
| Radius | 12.106 Earth radii (1.080 Jupiter radii) |
|---|---|
| Mass | 613.41 Earth masses (1.930 Jupiter masses) |
| Orbital period | 9.29 days |
| Orbital distance | 0.090 AU |
| Eccentricity | 0.023 |
| Earth Similarity Index | 0.08 |
| Distance from Earth | 1,148.7 light-years (352.2 parsecs) |
| Constellation | Leo |
| Discovery method | Transit |
| Discovery facility | SuperWASP |
| Discovery year | 2014 |
Data: NASA Exoplanet Archive, last updated 2025-04-16. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-106 b
Is WASP-106 b habitable?
No — WASP-106 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is WASP-106 b?
WASP-106 b is about 1,149 light-years from Earth in the constellation Leo. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 20,217,120 years to get there.
How big is WASP-106 b compared to Earth?
WASP-106 b has 12.11 times the radius of Earth and about 613 times its mass.
How long is a year on WASP-106 b?
One orbit around WASP-106 takes 9.3 Earth days — short enough that 39 of its years would fit into one Earth year.
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